STIHL BR 380 Owner's manual

Brand: STIHL

Model: BR 380

Category: Air blowers/dryers

Type: Owner's manual

STIHL BR 380 is a powerful and versatile backpack blower ideal for clearing leaves, grass, and debris from your yard, driveway, and other outdoor areas. With its strong air flow and lightweight design, the BR 380 makes quick work of even the toughest clean-up jobs. It features a fuel-efficient engine for longer run times and reduced emissions, and its ergonomic design ensures comfortable operation.

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STIHL BR 380

Instruction Manual

Original Instruction ManualPrinted on chlorine-free paper

Printing inks contain vegetable oils, paper can be recycled.

0458-453-0121-A. VA1.L11.

0000000747_001_GB

BR 380

English

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Contents

Dear Customer,

Thank you for choosing a quality

engineered STIHL product.

This machine has been built using

modern production techniques and

comprehensive quality assurance.

Every effort has been made to ensure

your satisfaction and troublefree use of

the machine.

Please contact your dealer or our sales

company if you have any queries

concerning your machine.

Your

Hans Peter Stihl

Guide to Using this Manual 2

Safety Precautions and Working

Techniques 2

Assembling the Unit 7

Fuel 9

Fueling 11

Information Before You Start 11

Starting / Stopping the Engine 12

Operating Instructions 14

Cleaning the Air Filter 14

Adjusting the Carburetor 15

Catalytic Converter 16

Checking the Spark Plug 16

Engine Running Behavior 17

Spark Arresting Screen in Muffler 18

Replacing the Starter Rope and

Rewind Spring 18

Storing the Machine 21

Maintenance and Care 22

Minimize Wear and Avoid Damage 24

Parts Subject to Wear and Tear 24

Main Parts 25

Specifications 26

Special Accessories 27

Maintenance and Repairs 27

EC Declaration of Conformity 27

Quality Certification 28

BR 380

English

Pictograms

All the pictograms attached to the

machine are shown and explained in this

manual.

Symbols in text

Warning where there is a risk of an

accident or personal injury or serious

damage to property.

Caution where there is a risk of

damaging the machine or its individual

components.

Engineering improvements

STIHL's philosophy is to continually

improve all of its products. For this

reason we may modify the design,

engineering and appearance of our

products periodically.

Therefore, some changes, modifications

and improvements may not be covered

in this manual.

Observe all applicable local safety

regulations, standards and ordinances.

If you have not used this power tool

model before: Have your dealer or other

experienced user show you how to

operate your power tool or attend a

special course in its operation.

Minors should never be allowed to use a

power tool.

Keep bystanders, especially children,

and animals away from the work area.

When the power tool is not in use, shut if

off so that it does not endanger others.

Secure it against unauthorized use.

The user is responsible for avoiding

injury to third parties or damage to their

property.

Do not lend or rent your power tool

without the instruction manual. Be sure

that anyone using your power tool

understands the information contained

in this manual.

The use of noise emitting power tools

may be restricted to certain times by

national or local regulations.

Do not operate your power tool if any of

its components are damaged.

Do not use a pressure washer to clean

the power tool. The solid jet of water

may damage parts of the power tool.

Accessories and Spare Parts

Only use parts and accessories that are

explicity approved for this power tool by

STIHL or are technically identical. If you

have any questions in this respect,

consult a servicing dealer. Use only high

quality parts and accessories in order to

avoid the risk of accidents and damage

to the power tool.

STIHL recommends the use of genuine

STIHL replacement parts. They are

specifically designed to match your

model and meet your performance

requirements.

Never attempt to modify your power tool

in any way since this may increase the

risk of personal injury. STIHL excludes

all liability for personal injury and

damage to property caused while using

unauthorized attachments.

Guide to Using this Manual Safety Precautions and

Working Techniques

Special safety precau

tions must be observed

when working with a

power tool.

It is important you read

and understand the

instruction manual before

first use and keep the

manual in a safe place for

future reference. Non-

observance of the safety

precautions may result in

serious or even fatal

injury.

BR 380

English

Physical Condition

To operate the power tool you must be

rested, in good physical condition and

mental health.

If you have any condition that might be

aggravated by strenuous work, check

with your doctor before operating a

power tool.

Persons with pacemakers only: The

ignition system of your power tool

produces an electromagnetic field of a

very low intensity. This field may

interfere with some pacemakers. To

reduce health risks, STIHL recommends

that persons with pacemakers consult

their physician and the pacemaker

manufacturer before operating this tool.

Do not operate the power tool if you are

under the influence of any substance

(drugs, alcohol) which might impair

vision, dexterity or judgment.

Applications

The blower is designed for blow-

sweeping leaves, grass, paper and

similar materials, e.g. in gardens, sports

stadiums, car parks and driveways. It is

also suitable for blow-sweeping forest

paths.

Do not blow-sweep hazardous

materials.

It must not be used for any other

purpose because of the increased risk of

accidents and damage to the power tool

itself. Never attempt to modify the power

tool in any way since this may result in

accidents or damage to the power tool.

Clothing and Equipment

Wear proper protective clothing and

equipment.

Wear sturdy shoes with non-slip soles.

STIHL offers a comprehensive range of

personal protective clothing and

equipment.

Transporting the Power Tool

Always stop the engine.

Transporting in a vehicle:

– Properly secure your power tool to

prevent turnover, fuel spillage and

damage.

Fueling

Always shut off the engine before

refueling.

Do not fuel a hot engine – fuel may spill

and cause a fire.

Always remove the power tool from your

back before refueling. Fuel the unit only

when it is standing on the ground.

Open the fuel cap carefully to allow any

pressure build-up in the tank to release

slowly and avoid fuel spillage.

Fuel your power tool only in well-

ventilated areas. If you spill fuel, wipe

the machine immediately – if fuel gets on

your clothing, change immediately.

This reduces the risk of unit vibrations

causing the fuel cap to loosen or come

off and spill quantities of fuel.

Clothing must be sturdy

but allow complete free

dom of movement. Wear

snug-fitting clothing, an

overall and jacket combi

nation, do not wear a

work coat.

Avoid any clothing,

scarves, neckties, jewel

lery or anything that could

get into the air intake. Tie

up and confine long hair

(e.g. with a hair net, cap,

hard hat, etc.).

Wear safety glasses and

hearing protection, e.g.

earplugs or ear muffs.

Gasoline is an extremely

flammable fuel. Keep

clear of naked flames. Do

not spill any fuel – do not

smoke.

Check for leakage. To

reduce the risk of serious

of fatal burn injuries, do

not start or run the engine

until leak is fixed.

After fueling, tighten

down the screw-type fuel

cap as securely as

possible.

BR 380

English

Before Starting

Check that your power tool is properly

assembled and in good condition – refer

to appropriate chapters in the instruction

manual.

– Throttle trigger must move freely

and spring back to the idle position

when released.

– The setting lever must move easily

to STOP or 0

– The blower tubes must be properly

assembled.

– Keep the handles dry and clean –

free from oil and dirt – for safe

control of the power tool.

– Check that the spark plug boot is

secure – a loose boot may cause

arcing that could ignite combustible

fumes and cause a fire.

– Never attempt to modify the controls

or the safety devices in any way.

– Check condition of impeller

housing.

A worn impeller housing (cracks, nicks,

chips) may result in an increased risk of

injury from thrown foreign objects. If the

impeller housing is damaged, consult

your dealer – STIHL recommends you

contact a STIHL servicing dealer.

To reduce the risk of accidents and

personal injury, do not operate your

power tool if it is not properly assembled

and in good condition.

For emergencies: Practise quickly

opening the fastener on the waist belt,

loosening the shoulder straps and

setting down the unit.

Start the engine.

Start the engine at least 3 meters from

the fueling spot, outdoors only.

Your power tool is designed to be

operated by one person only. Do not

allow other persons in the work area –

even when starting.

Do not drop start your machine – the

correct starting procedure is described

in the instruction manual.

Place the unit on level ground, make

sure you have secure footing, hold the

unit securely.

As soon as the engine starts, the air flow

may throw small objects (e.g. stones) in

your direction.

Holding and Controlling the Power Tool

The unit s carried as a backpack. Hold

and control the blower tube with your

right hand on the control handle – even

if you are left-handed.

Walk slowly forwards as you work –

observe the nozzle outlet at all times –

do not walk backwards – risk of

stumbling.

Always shut off the engine before taking

the power tool off your back.

During Operation

In the event of impending danger or in

an emergency, switch off the engine

immediately by moving the setting lever

to STOP or 0.

To reduce the risk of personal injury , do

not allow any other persons within a

radius of 15 meters of your own position.

373BA005 KN

BR 380

English

To reduce the risk of damage to

property, also maintain this distance

from other objects (vehicles, windows).

Do not direct the air blast towards

bystanders or animals since the air flow

can blow small objects at great speed.

When blow-sweeping (in open ground

and gardens), watch out for small

animals to avoid harming them.

Never leave a running machine

unattended.

Take special care in slippery conditions,

on slopes or uneven ground.

Watch out for obstacles: Be careful of

refuse, tree stumps, roots and ditches

which could cause you to trip or stumble.

Never work on a ladder or any other

insecure support.

Be particularly alert and cautious when

wearing hearing protection because

your ability to hear warnings (shouts,

alarms, etc.) is restricted.

Work calmly and carefully – in daylight

conditions and only when visibility is

good. Stay alert so as not to endanger

others.

To reduce the risk of accidents, take a

break in good time to avoid tiredness or

exhaustion.

To reduce the risk of serious or fatal

injury from breathing toxic fumes,

ensure proper ventilation when working

in trenches, hollows or other confined

locations.

To reduce the risk of accidents, stop

work immediately in the event of

nausea, headache, visual disturbances

(e.g. reduced field of vision), problems

with hearing, dizziness, deterioration in

ability to concentrate. Apart from other

possibilities, these symptoms may be

caused by an excessively high

concentration of exhaust gases in the

work area.

To reduce the risk of fire, do not smoke

while operating or standing near your

power tool. Note that combustible fuel

vapor may escape from the fuel system.

If dust levels are very high, always wear

a suitable respirator.

Operate your power tool so that it

produces a minimum of noise and

emissions – do not run the engine

unnecessarily, accelerate the engine

only when working.

After finishing work, put the unit down on

a level, non-flammable surface. To

reduce the risk of fire, do not put it down

near easily combustible materials (e.g.

wood chips, bark, dry grass, fuel).

Mufflers with a catalytic converter can

become particularly hot.

If your power tool is subjected to

unusually high loads for which it was not

designed (e.g. heavy impact or a fall),

always check that it is in good condition

before continuing work – see also

"Before Starting Work". Check the fuel

system in particular for leaks and make

sure the safety devices are working

properly. Do not continue operating your

power tool if it is damaged. In case of

doubt, have the machine checked by

your servicing dealer.

Using the vacuum attachment

Watch out for small animals when

vacuuming in open areas, yards and

gardens.

Your power tool produces

toxic exhaust fumes as

soon as the engine is

running. These fumes

may be colorless and

odorless and contain

unburned hydrocarbons

and benzol. Never run

the engine indoors or in

poorly ventilated loca

tions, even if your model

is equipped with a cata

lytic converter.

To reduce the risk of per

sonal injury from fire,

never attempt to pick up

hot or burning sub

stances (e.g. smoldering

ashes, glowing

cigarettes).

To reduce the risk of fatal

injury from fire or explo

sion, never attempt to

pick up combustible fluids

(e.g. gasoline) or materi

als soaked in

combustible fluids.

BR 380

English

Vibrations

Prolonged use of the power tool may

result in vibration-induced circulation

problems in the hands (whitefinger

disease).

No general recommendation can be

given for the length of usage because it

depends on several factors.

The period of usage is prolonged by:

– Hand protection (wearing warm

gloves)

– Work breaks

The period of usage is shortened by:

– Any personal tendency to suffer

from poor circulation (symptoms:

frequently cold fingers, tingling

sensations).

– Low outside temperatures.

– The force with which the handles

are held (a tight grip restricts

circulation).

Continual and regular users should

monitor closely the condition of their

hands and fingers. If any of the above

symptoms appear (e.g. tingling

sensation in fingers), seek medical

advice.

Maintenance and Repairs

Service the machine regularly. Do not

attempt any maintenance or repair work

not described in the instruction manual.

Have all other work performed by a

servicing dealer.

STIHL recommends that you have

servicing and repair work carried out

exclusively by an authorized STIHL

servicing dealer. STIHL dealers are

regularly given the opportunity to attend

training courses and are supplied with

the necessary technical information.

Only use high-quality replacement parts

in order to avoid the risk of accidents

and damage to the machine. If you have

any questions in this respect, consult a

servicing dealer.

STIHL recommends the use of genuine

STIHL replacement parts. They are

specifically designed to match your

model and meet your performance

requirements.

To reduce the risk of injury, always shut

off the engine before carrying out any

maintenance or repairs or cleaning the

machine. – Exception: Carburetor and

idle speed adjustments.

Do not turn the engine over on the

starter with the spark plug boot or spark

plug removed unless the slide control /

stop switch is on STOP or 0 since there

is otherwise a risk of fire from

uncontained sparking.

To reduce the risk of fire, do not service

or store your machine near open flames.

Check the fuel filler cap for leaks at

regular intervals.

Use only a spark plug of the type

approved by STIHL and make sure it is

in good condition – see "Specifications".

Inspect the ignition lead (insulation in

good condition, secure connection).

Check the condition of the muffler.

To reduce the risk of fire and damage to

hearing, do not operate your machine if

the muffler is damaged or missing.

Do not touch a hot muffler since burn

injury will result.

Vibration behavior is influenced by the

condition of the AV elements – check the

AV elements at regular intervals.

Special accessory

BR 380

English

Mounting the Elbow

A combination wrench and carburetor

screwdriver are stowed on the underside

of the blower.

The throttle cable is already connected

and must not be kinked during

assembly.

N Push the elbow (1) into the stub (2)

as far as it will go – the stops on the

elbow and stub must line up.

N Fit the nut (3) in the hexagon recess

in the stub.

N Insert the screw in the nut from the

other side and tighten moderately –

the elbow must still turn.

Assembling the Unit

353BA002 KN

BR 380

English

Mounting the Blower Tube

Operate the machine only with the

blower tube and nozzle properly

mounted.

N Attach the throttle cable (4) to the

retainer (5).

N Push the blower tube (6) into the

pleated hose (7).

N Push blower tube (8) onto the end of

the blower tube (6) and rotate it

clockwise until the bayonet coupling

locks.

N Push the nozzle (9) onto the blower

tube (8) and rotate it clockwise until

the bayonet coupling locks.

N Rotate the pleated hose (7)

counterclockwise as far as stop and

leave it in that position.

N Turn the control handle (10)

counterclockwise to the horizontal

position.

N Rotate the complete blower tube

assembly until the nozzle discharge

opening points in the same direction

as the control handle.

N Tighten down the clamp screw (11)

firmly.

373BA001 KN

BR 380

English

Adjusting the Control Handle

N Put the unit on your back.

N Loosen the clamp screw (11).

N Slide the control handle (10) along

the tube to the most comfortable

position.

N Tighten down the clamp screw (11)

firmly.

Adjusting the Harness Straps

N Pull the ends of the straps

downward to tighten the harness.

Loosening the Harness Straps

N Lift the tabs of the sliding adjusters.

N Adjust the straps so that the

backplate is held firmly and

comfortably against your back.

The engine requires a mixture of

gasoline and engine oil.

Avoid direct skin contact with and

breathing in of gasoline fumes.

STIHL MotoMix

STIHL recommends using STIHL

MotoMix. This pre-blended fuel is free of

benzene and lead, stands out because

of a high octane rating, and always

provides the proper mixing ratio.

STIHL MotoMix is specially engineered

for STIHL engines and guarantees long

engine life.

MotoMix is not available in all markets.

Mixing fuel

Unsuitable fuels or a mixing ratio that

deviates from the specification can lead

to severe engine damage. The engine,

seals, fuel lines and fuel tank may be

damaged if poor quality gasoline or

engine oil is used.

Gasoline

Use only high-quality gasoline with an

octane rating of at least 90 ROC –

leaded or unleaded.

Unleaded gasoline must be used in

machines equipped with a catalytic

converter.

373BA002 KN

373BA003 KN

373BA004 KN

Fuel

BR 380

English

Using multiple tankfuls of leaded

gasoline can substantially reduce the

effectiveness of the catalytic converter.

Gasoline with an alcohol component

exceeding 10% can cause impaired

engine performance in engines with

manually adjustable carburetors and

thus should not be used in these

engines.

Engines with M-Tronic deliver full engine

performance using gasoline with an

alcohol component of up to 25% (E25).

Engine oil

Use only high-quality two-stroke engine

oil – preferably STIHL two-stroke engine

oil, as this is specially engineered for

STIHL engines and guarantees long

engine life.

If STIHL two-stroke engine oil is

unavailable, use only two-stroke engine

oil for air-cooled engines – do not use

engine oil for water-cooled engines or

engines with a separate oil circuit (e.g.,

conventional four-stroke engines).

Only STIHL two-cycle engine oil 1:50

may be used to produce the fuel mixture

for machines with a catalytic converter.

Mixing ratio

with STIHL two-cycle engine oil 1:50;

1:50 = 1 part oil + 50 parts gasoline

Examples

N Pour oil into an approved safety fuel

canister first, then add gasoline and

mix thoroughly

Storing fuel mixture

Store in approved safety fuel canisters

only in a dry, cool and secure place

protected against light and sunlight.

Fuel mixture ages – mix only as much as

needed for a few weeks. Do not store

fuel mixture for longer than

three months. The fuel mixture can

become unusable faster if exposed to

light, sunlight or low or high

temperatures.

N Shake the canister containing the

fuel mixture thoroughly before

refueling

Pressure can build up inside the canister

– open carefully.

N The fuel tank and the canister in

which fuel mixture is stored should

be cleaned thoroughly from time to

time

Residual fuel and the liquid used for

cleaning must be disposed of in

accordance with regulations and without

harming the environment!

Quantity of

gasoline

STIHL two-cycle engine

oil 1:50

Liters Liters (ml)

10.02(20)

5 0.10 (100)

10 0.20 (200)

15 0.30 (300)

20 0.40 (400)

25 0.50 (500)

BR 380

English

Preparations

N Before fueling, clean the filler cap

and the area around it to ensure that

no dirt falls into the tank.

N Position the machine so that the

filler cap is facing up.

STIHL recommends you use the STIHL

filler nozzle for fuel (special accessory).

Filling up with fuel

Take care not to spill fuel while fueling

and do not overfill the tank.

N Open the filler cap.

N Fill up with fuel.

N Close the filler cap.

After fueling, tighten down the filler cap

as securely as possible by hand.

With the engine stopped and before

starting, check the air intake grille

between the backplate and powerhead

for blockages and clean if necessary. A

protective screen is available as a

special accessory to keep the air intake

clear.

N Move the setting lever to the idel

position.

The throttle cable disconnects itself from

the throttle trigger if the engine is not

shut off in the idle position.

The throttle cable reconnects itself

automatically when the setting lever is

moved to the idle position.

Fueling

373BA006 KN

Information Before You Start

373BA037 KN

BR 380

English

Starting the engine

N Observe safety precautions.

N Slide the stop switch (1) to #

N Move setting lever (2) to center

position – starting throttle.

The setting lever enables you to select

and hold any throttle position between

(lower stop) idle and full throttle (upper

stop).

Set the lever to the idle position before

switching off the engine.

If the engine is cold

N Turn the choke knob to g.

If the engine is warm

N Turn the choke knob to e.

N Also use this setting if the engine

has been running but is still cold.

Starting

N Place the unit securely on the

ground and make sure that

bystanders are well clear of the

nozzle outlet.

N Make sure you have a firm footing:

Hold the unit with your left hand on

the housing and put one foot against

the base plate to prevent it slipping.

N Hold the starter grip with your right

hand.

N Pull the starter grip slowly until you

feel it engage and then give it a brisk

strong pull.

Do not pull out the starter rope all the

way – it might otherwise break.

Starting / Stopping the

Engine

373BA008 KN

373BA009 KN

373BA010 KN

373BA011 KN

373BA012 KN

BR 380

English

N Do not let the starter grip snap back.

Guide it slowly back into the housing

so that the starter rope can rewind

properly.

When the engine begins to fire:

If the engine is cold:

N Move the choke knob to e and

continue cranking until the engine

runs.

If the engine is warm:

N Continue cranking until the engine

runs.

As soon as the engine runs

N Move setting lever (2) to lower stop

– the engine settles down to idle

speed.

To shut down the engine

N Slide the stop switch (1) to $ .

Other hints on starting

At very low outside temperatures

N Warm up the engine.

As soon as the engine runs:

N Move setting lever to lower stop –

the engine settles down to idle

speed.

N Open throttle slightly – warm up the

engine for a short period.

If the engine does not start

If you did not turn the choke knob to e

quickly enough after the engine began to

fire, the combustion chamber is flooded.

N Pull off the spark plug boot.

N Unscrew and dry off the spark plug.

N Move the stop switch to 0.

N Open the throttle wide.

N Crank the engine several times with

the starter to clear the combustion

chamber.

N Refit the spark plug and connect the

spark plug boot.

N Slide the stop switch to # and set

the choke knob to e – even if the

engine is cold.

N Now start the engine.

373BA013 KN

373BA014 KN

373BA015 KN

373BA016 KN

BR 380

English

If fuel tank has been run completely dry

and then refueled

N Pull the starter rope several times to

prime the fuel system.

During Operation

After a long period of full throttle

operation, allow the engine to run for a

short while at idle speed so that engine

heat can be dissipated by the flow of

cooling air. This protects engine-

mounted components (ignition,

carburetor) from thermal overload.

After Finishing Work

Storing for a short period: Wait for the

engine to cool down. Empty the fuel tank

and keep the machine in a dry place,

well away from sources of ignition, until

you need it again. For longer out-of-

service periods – see "Storing the

Machine".

If there is a noticeable loss of engine

power

N Turn the choke knob to g.

N Take out the screw (1) and remove

the filter cover (2).

Operating Instructions Cleaning the Air Filter

373BA017 KN

BR 380

English

N Remove the main filter (3) from the

cover and inspect it – if it is dirty or

damaged, fit a new one.

Always install a new prefilter together

with the new main filter.

N Take the prefilter (4) out of the filter

cover.

N If prefilter is wet, dry it – then knock

it out on the palm of your hand or

blow it out with compressed air.

Always replace a damaged prefilter.

N Clean loose dirt from the filter cover

and filter chamber.

N Install the main filter (3) and

prefilter (4) in the filter cover.

N Fit the cover on the filter base (5)

and tighten it down firmly.

The carburetor comes from the factory

with a standard setting.

This setting provides an optimum fuel-air

mixture under most operating

conditions.

With this carburetor it is only possible to

adjust the high speed and low speed

screws within fine limits.

Standard Setting

N Stopping the engine

N Check the air filter and clean or

replace as necessary.

N Check the spark arresting screen

(not in all versions) in the muffler

and clean or replace as necessary.

N Carefully turn both adjusting screws

counterclockwise as far as stop.

N The high speed screw (H) is 1/4 turn

open.

N The low speed screw (L) is 1/4 turn

open.

N Start and warm up the engine.

Adjusting Idle Speed

Engine stops while idling

N Turn the idle speed screw (LA)

slowly clockwise until the engine

runs smoothly.

Erratic idling behavior, engine stops

even though setting of LA screw has

been corrected, poor acceleration

Idle setting is too lean:

N Turn the low speed screw (L)

counterclockwise, no further than

stop, until the engine runs and

accelerates smoothly.

Erratic idling behavior

Idle setting is too rich

N Turn the low speed screw (L)

clockwise, no further than stop, until

the engine runs and accelerates

smoothly.

It is usually necessary to change the

setting of the idle speed screw (LA) after

every correction to the low speed

screw (L).

373BA018 KN

Adjusting the Carburetor

373BA043 KN

373BA044 KN

BR 380

English

Fine tuning for operation at high altitude

A slight correction of the setting may be

necessary if the engine does not run

satisfactorily:

N Check the standard setting.

N Warm up the engine.

N Turn high speed screw (H)

clockwise (leaner) – no further than

stop.

If the setting is too lean there is a risk of

engine damage due to insufficient

lubrication and overheating.

Power tools with a catalytic converter

(depending on model) must be run on a

50 : 1 mixture of unleaded gasoline and

STIHL two-stroke engine oil or

equivalent two-stroke engine oil – see

chapter on "Fuel".

The catayltic converter integrated in the

muffler reduces the harmful emissions in

the exhaust gas.

The correct carburetor setting (if

adjustable) and strict observance of the

prescribed mix ratio of gasoline and two-

stroke engine oil are essential to

minimize harmful emissions and ensure

a long catalytic converter service life.

If the engine is down on power, difficult

to start or runs poorly at idle speed, first

check the spark plug.

N Remove the spark plug – see

"Starting / Stopping the Engine".

N Clean dirty spark plug.

N Check electrode gap (A) and

readjust if necessary – see

"Specifications".

N Rectify the problems which have

caused fouling of the spark plug.

Possible causes are:

– Too much oil in fuel mix.

– Dirty air filter.

– Unfavorable running conditions.

Catalytic Converter Checking the Spark Plug

000BA002 KN

BR 380

English

N Install a new spark plug after about

100 operating hours – or sooner if

the electrodes are badly eroded.

Install only suppressed spark plugs

of the type approved by STIHL – see

"Specifications".

To reduce the risk of arcing and fire

If the spark plug comes with a

detachable adapter nut:

N Screw the adapter nut (1) onto the

thread and tighten it down firmly.

On all spark plugs

N Always press the boot (2) firmly on

to the spark plug (3).

If engine running behavior is

unsatisfactory even though the air filter

is clean and the carburetor is properly

adjusted, the cause may be the muffler.

Have the muffler checked for

contamination (carbonization) by your

servicing dealer.

STIHL recommends that you have

servicing and repair work carried out

exclusively by an authorized STIHL

servicing dealer.

000BA045 KN

000BA050 KN

Engine Running Behavior

BR 380

English

If the engine is down on power or does

not run smoothly at maximum RPM,

check the spark arresting screen (not

fitted in all versions) in the muffler.

Wait for the engine to cool down

completely before performing this work.

N Use suitable tool to squeeze ends of

clip (1) together and then lift the clip

away.

N Pull the spark arresting screen (2)

out of the muffler.

N Clean the spark arresting screen if

necessary.

N If the spark arresting screen is

damaged or heavily carbonized, fit a

new one.

Replacing the starter rope

N Take out the screws (1).

N Remove the starter cover (2) from

the housing.

N Remove the spring clip (3).

N Remove the rope rotor with

washer (4) and pawl (5).

Spark Arresting Screen in

Muffler

373BA031 KN

Replacing the Starter Rope

and Rewind Spring

373BA025 KN

353BA034 KN

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STIHL BR 380 Owner's manual

Brand: STIHL

Model: BR 380

Category: Air blowers/dryers

Type: Owner's manual

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STIHL BR 380 Owner's manual

STIHL BR 380 Owner's manual

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